sqlite 内存数据库的attach

sqlite3_open(":memory:",&db);
...
ret = sqlite3_exec(db,"CREATE TABLE new_table1 (id integer primary key autoincrement,name vchar(32))",&zErrMsg);

ret = sqlite3_exec(db,"begin transaction","insert into new_table1 (name) values ('123');","commit transaction",&zErrMsg);



sqlite3_open("c:/A.dat",&db);
ret = sqlite3_exec(db,"attach 'c:/A.dat' as new_db","insert into new_db.new_table2 (name) select name from new_table1",&zErrMsg);

if (ret!=SQLITE_OK)
MessageBox("附加数据库失败！");

300万条内存数据,10个字段,大概写入了631MB物理文件

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!